JPH06507455A - Method and apparatus for checking the diameter of the spool in a spinning machine spinning unit - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Detailed description of the invention] Method and apparatus for checking the diameter of a spool in a spinneret-like spinning unit In the present invention, a sliver of known thickness is fed at a constant speed and a thread is formed from it. , the yarn is discharged with a discharge speed that is a constant proportion to the sliver supply speed, whereas In the spinning section of the spinning machine, where the yarn is to be wound onto the spool at a constant winding speed, this Concerning the method for determining the diameter of the spool and the device for carrying out this Ru.

Bringing variable contact to the spool circumference to check the spool diameter is publicly known. This variable contact allows for varying spool diameters at any desired point in time. This is a mechanical method for checking. In this connection, continuous or discontinuous It is common to use a mechanical sensor that contacts the circumferential surface of the spool.

As experienced in practice, a prerequisite for correct functioning is always a tightly wound A spool of spun thread is formed, but there are limitations to this. soft In the case of wound spools, due to variable contact interruption, due to the spool diameter distorts the signal on the spool circumference that should be formed. This situation is caused by a thread breakage. Reduces the likelihood of detecting the end of a later bundle the first time, or changing the spool. This will lead to inaccurate results. Scanner (West German Patent Application Publication No. 3827345) Mechanical scanning of the spool diameter according to No. do not have.

There is a second solution that detects the diameter of the bobbin head spool by using a non-contact sensor. obtain. Optical sensors detect changes in the spool without the need for mechanical contact of the surface. Continuously detect diameter. However, optical scanners (West German Patent Application Publication No. 3) 617151 (Figure 3), optical elements are contaminated by dust, fibers, and other powders. has the disadvantage of being contaminated, resulting in falsification of the resulting signal.

A third method in the prior art (U.S. Pat. No. 3,877,309) is to Detects the rotation speed of the winding roller and confirms the length and diameter of the thread based on this. do.

However, this solution involves moving the thread receiving device relative to the spool circumference and positioning it in an appropriate position. It cannot be used to bring influence factors under practical conditions. Therefore, a constant distance between the circumferential surface of the bobbin winder and the thread receiving device is not maintained. It is et al. This influencing factor can also be used to determine when to start replacing the spool. It should also lead to inaccuracies.

Such influencing factors are e.g. Possibly retractable pressure rollers of different hardness (this has a variable slip on the discharge roller) lip) and the coated rubber on unevenly worn friction rollers (winding tension). (causing fluctuations in tension).

Various spinnable materials and various spinning parameters (thickness of yarn, winding tension) As a result, different thread thicknesses and spool stiffnesses are the norm. this is When using a sensor that detects the spool diameter (compared to Makes pool diameter verification inaccurate.

SUMMARY OF THE INVENTION It is therefore an object of the present invention to avoid and overcome the above-mentioned drawbacks and to perform direct scanning of the spool. We present a method and device for checking the diameter of each spool in a simple manner. It is to provide.

This problem involves using a constant spool under predetermined conditions (thread thickness, winding tension). The length of the thread corresponding to the diameter has been confirmed empirically, Taking into account possible spinning operation interruptions in this spinning unit, the length of the formed yarn is measured, The winding tension is confirmed from the quotient of the winding speed to the discharge speed, The confirmed thread thickness and confirmed winding tension are then determined for a given spool diameter. The yarn thickness and winding tension are compared with the yarn length based on the empirically confirmed yarn length. The deviation that occurs here will be used to compensate for the thread length when checking the actual spool diameter. This is solved by a method characterized in that it is used as a positive factor.

Empirical confirmation of the thread length serves to form reference values. This allows the length of the thread to be It can be measured by direct scanning of the thread being fed onto the spool while forming the roll.

Naturally, after the spool is formed, i.e. after this has reached the set value, the spool The length of yarn unwound from the thread can be measured by any suitable conventional method.

This applies when spinning yarns of the same length. should lead to some kind of distortion This is because, as far as the influence is taken into account, the same amount of yarn should be wound. in this case , interruptions in the spinning operation, e.g. yarn breaks, must be taken into account when checking the yarn length. do not have. For example, measure the rotation of the discharge roller (taking into account its diameter), and then By calculating the yarn length (taking into account interruptions in the spinning operation, etc.), Check the length of the thread. Since the diameter of the spool depends on the thickness of the thread, this The thickness of the sliver and the delay, i.e. the sliver feed rate versus the yarn discharge rate. It can be confirmed from the quotient. The spool diameter also determines whether the spool is tightly wound. That is, the winding tension is determined from the quotient of the winding speed and the discharge speed.

Next, the thread thickness given as a reference value and the winding tension given as a reference value are The tension is then compared with the corresponding value actually measured. This comparison gives From the deviations, a correction value is formed, which is taken into account when checking the actual spool dimensions. , the increase in thread length or Reduction is led.

The computer that performs the corresponding correction is programmed in advance by inputting reference values. Note that the system has been set up and the correction will result in the correct final value.

To eliminate inaccuracies, especially when forming conical spools, It should be considered that the relevant spool diameter should be used as a reference value. Ru.

The pressure roller of the discharge roller pair may wear out due to long-term operation. This problem becomes even more serious in the case of a winding roller for driving a spool.

For this reason, in a preferred embodiment of the method according to the invention, a predetermined period of time elapses. Re-examine the actual thread length for a given spool diameter and determine the actual thread length. The correction factor due to the deviation from the theoretical yarn length should be taken into account. adjust the vector. In this way the wear that sometimes occurs in the interim is taken into account. spool diameter, regardless of drive member wear that should affect the spool diameter. The diameter can be held constant within relatively small tolerances.

Thread length measurements can in principle be made at any spool diameter, which is the case here. This also applies to reference value confirmation. In case of subsequent re-inspection of spool diameter Select the preferred diameter of the full spool as the constant spool diameter above. alone is sufficient.

The twisting of the yarn is done mechanically, for example in rotor spinning machines or friction spinning machines. When applied to the present invention, the twisting of the yarn makes the yarn hard or soft. In a further free embodiment of the method, the quotient of the rotational speed of the spinning member versus the rotational speed of the discharge roller is determined. From this, the number of twists per certain length of yarn is ascertained, and the deviation from the predetermined reference value is determined from the actual This is taken into account as a correction factor when checking the actual spool diameter.

The predetermined reference value is already given during computer programming, and A comparison with this known reference value is therefore possible. Measuring the number of twists in a yarn is therefore a measure of yarn thickness. This can be done in addition to the verification of the As mentioned above, the actual thread thickness depends on the thread. This is because it has little to do with the twist in the case.

In the case of a spinning rotor, the rotational speed of this spinning member is the unit time of the twist imparted to the yarn. Accurately correspond to the number of hits.

However, in the case of friction spinning, the diameter is several times the diameter or thickness of the thread. Therefore, the twist is small (due to the transfer of yarn at the periphery of the friction spinning member). The number of twists in the yarn is significantly larger than this number for the rotational speed of the friction spinning member. It brings about This is taken into account when determining the number of twists of yarn per unit of length. Must be. Therefore, from the peripheral surface of the rotating spinning member, it rolls on this and forms the spinning member. In the apparatus of the present invention, in which rotation is to be transmitted to the yarn being formed, the unit length of the yarn is To confirm the number of twists per thread, the rotational conduction behavior between the spinning member and the yarn is taken into consideration. It is necessary to

In the case of spinning methods in which the twist of the yarn is effected aerodynamically, the twist of the yarn and therefore also the yarn The hardness of depends on the pressure of compressed air introduced to act on the yarn. this thing is an aerodynamic oven-end spinning process in which individual fibers are entangled with rolling yarn ends. . The sliver is split into sub-slivers, twisted, unrolled and re-entangled It is also applied to the aerodynamic spinning method, the hat method, in which the fiber ends are fixed in a false twist position. Ru.

For the aerodynamic spinning method, in a preferred embodiment of the method of the invention, the yarn The pressure of the compressed air introduced into the spinning member to bring about the twist is measured and The deviation from the reference value is taken into account as a correction factor when checking the actual spool diameter. It will be done.

However, the compressed air pressure is not directly proportional to the number of twists in the yarn and therefore to the stiffness of the yarn.

The dimensions of the feed groove cavity for the compressed air fed to the spinning element, relative to the central running path of the spinning element. The position of the feeding groove cavity and its inclination with respect to the longitudinal axis of the spinning member Even if there is a slight difference, it will significantly affect the compressed air pressure inside, and therefore there will be some difference depending on the pressure. Although there are differences, the thickness of the thread has a big influence. Due to the different geometries of the spinning elements The different degrees of influence exerted on the air pressure have other geometries of the spinning member. This should be taken into account when checking the actual spool diameter when exchanging other spinning elements. Ru. The size of the correction factor in this case is confirmed empirically in advance, and then If necessary, the label corresponding to the correction factor can be entered without further experimentation. set to the force position or pick up the corresponding value in the table and enter it as a numerical value. be done.

Other factors that should affect the spool diameter are the This is the characteristic of the fiber material. For natural fibres, this is in principle lower than for synthetic fibres. It is extremely elastic and voluptuous. Also in this case, refer to it when inputting it to the computer. form a value. Furthermore, the characteristics of the fiber material that affect the spool diameter are When threading, it is taken into account as a correction factor to check the actual spool diameter. .

Instantaneous confirmation of the spool diameter is important from various points of view, such as correction factors. Spool replacement begins when the predetermined spool diameter has been reached, taking into account the Preferably, a signal is generated for.

Checking the spool diameter is on the other hand extremely important in connection with thread break repair . In the present invention, the spool diameter confirmed in connection with thread breakage is the signal specific quantity. is provided to the receiving device driving means for checking the adjustment value, and the receiving device The spool is placed at a certain distance from the circumference of the spool.

Additionally, wear may occur in the drive means of the receiving device; This can cause damage to the yarn receiving device in each spinning unit. Therefore, this If this occurs in an individual spinning unit, in the method of the present invention, the yarn receiving device The play that occurs in the distance to the outer circumferential surface of the spool is considered as a correction factor. be done.

Such play changes over time as a result of wear. This kind of change in play In order to compensate for this play, in a preferred embodiment of the invention, such play is If there is a change, the corresponding correction factor will be corrected. be corrected.

Sliver supply for carrying out the inventive method for checking the current spool diameter Rotation speed receiving device to check the rotation speed of each device, discharge device and winding device These are commonly used to input the length of thread that corresponds to a given spool diameter. The length of this thread is connected to the control device of the sliver feeder, ejector and winding device. The correction is made in the form of a correction factor, which is calculated on the basis of the confirmed rotational speed of the It is done so that it may be obtained.

According to the present invention, the twist of the thread is taken into account when determining the diameter of each spool. In a preferred embodiment of the device, the spinning member is rotated to form the thread. However, this spinning member or its driving member has a measuring element that measures its rotation speed. be arranged or adjustable and that this provides a correction factor. connected to the device.

It is not a prerequisite for the invention that the spinning member rotates. The spinning member rotates. For spinning, the air vortex is rotated and this creates a tangential member. The invention can also be used when the rotor is maintained in rotation by supplying compressed air. can be done. In this case, open-end spinning elements or simply spinning elements are the problem. A sliver is then fed to this for yarn formation and a false twist is imparted to the yarn. this In such cases, the yarn formed in the present invention is opened to the yarn forming zone from which the yarn is discharged. A compressed air supply opening is provided, to which a compressed air conduit and a compressed air source are connected. A signal generator that generates a signal according to the air pressure is placed between them. This is connected to a control device to form a correction factor. This control device , is connected to the spool exchange device, and thereby the predetermined spool capacity is achieved. The full spool is replaced with an empty spool.

The control device is connected to the drive means of the yarn receiving device, and the control device is connected to the drive means of the yarn receiving device and It is preferable that the thread receiving device can be moved to a point at a certain distance from the circumferential surface. Delicious. Since various correction values can be input in addition to the reference value in the control device, The yarn receiving device is spaced apart from the periphery of the forming spool and receives the spinning yarn. It can always be brought to the optimum location to receive the end of the thread needed for restart.

Correction factors are not necessarily always automatically measured and formed (such as various tolerances). Since there are some correction factors that must be confirmed empirically, An input device is provided on the control device for manual input of the controller.

In this case, the input device can be divided into several parts and the fibers that influence the spool diameter can be Input fiber material properties and place the yarn receiving device close to the spool for each spinning unit. It is preferable to allow play in the interval when inputting data individually.

In order to avoid the need to provide a unique input device for each spinning unit, the present invention In a preferred embodiment, the controller has a separate memory for each spinning unit. and input devices can be selectively connected to each of them.

In the present invention, the term "correction factor" refers to the numerical value input to the control device. means all numerical values for changing the basic setting values. Theoretical thread length, where The role of whether or not to take into account play, wear of conveying members or conductive members, etc. I don't.

For time-accurate adjustment of spool changes and adjustment of the thread receiving device, the spool The diameter is required as the signal specific capacitance. The spool diameter is confirmed below. The signal constant, which is the input quantity that is ultimately used to control the above-mentioned process. The technical circumstances leading up to obtaining capacity will be explained.

As mentioned above, the method and device of the present invention can be used in a simple and reliable manner without the need for contact. during the spinning process, adapting to various changing circumstances, including various abrasions, without The current spsp at each point in time has essential meaning for various tasks. To make it possible to accurately confirm the diameter of the wheel. In other words, the time-accurate sp The spool is designed to be replaceable, and even in the case of a conical spool, the thread necessary for splicing can be If the length is not recognized by the knowledge of the spool diameter (very accurately compared to Can be confirmed. Additionally, to receive the correct end of the thread from the spool, The thread receiving nozzle is aligned exactly with the spool. The nozzle can be moved and placed in place without damaging the spool. It is extremely important to be as close as possible to the

The aspect of solving the problem by the method of the present invention also applies to mechanical twisting of open-end spinning machines. It can also be applied to aerodynamically twisted yarns in spinning machines that process the sliver aerodynamically. . The present invention is suitable for processes such as rotor spinning, friction spinning or even electrostatic spinning. Not only is it necessary for spinning devices operating on the open-end spinning principle, It can also be used in the case of pseudo-twist spinning which results in mechanical twist.

The method and apparatus of the invention can be realized economically advantageously. In principle, all covered Since the drive members have a central drive means, each of which can be provided with a rotation speed measuring means. It is. Therefore, the device of the present invention can also be used as a similar processing unit to the already existing bore slave machine. can be installed at low cost.

In the following, the invention will be explained more specifically in connection with the illustrated embodiments.

Figure 1 shows the spool diameter for rotor spinning or air momentum moment spinning. a flow sheet for verifying and processing signals according to the present invention; FIG. 2 is a partially sectional side view of a spinning unit according to the invention in a rotor spinning machine; FIG. 3 is a partial plan, cross-sectional view of a spinning unit according to the invention of a false value twist spinning machine. .

In particular, since rotor spinning machines are practically used, in the following we will refer to rotor spinning machines. The first embodiment of the present invention will now be described in detail.

Figure 2 shows such rotor spinning as an essential unit for understanding the present invention. It is a cross section showing a processing unit or a spinning unit in the machine. However, if the drawing is concise For clarity, illustrations of members necessary for spinning or splicing are omitted.

The spinning device l in the rotor spinning machine includes a feeding device 2, a fibrillating device t3, and a spinning roller. The spinning member 4 has a spinning member 4 configured as a spinning rod. The spinning device l then further discharges It has a winding device 5 and a winding device 6.

The supply device 2 includes a supply roller 2o that is driven to rotate and a supply frame that cooperates with the supply roller 2o. 21. Sliver B stored in a container is supplied to these. Supplement The feed roller 20 extends over a number of spinning units in a conventional manner and is positioned at a suitable location. a sensor that detects the number of rotations of the supply roller 20, for example, at the driving end of the spinning machine. 23 are arranged.

The defibrating device 3 includes a defibrating roller 30 disposed within a casing 31. A fiber supply conduit 40 extends from the spinning rotor 4 to the spinning rotor 4, and a fiber supply conduit 40 extends from the spinning rotor 4 to the spinning rotor 4. The fibers F discharged from the fiber B through the rotating defibrating roller 30 are sent to the spinning rotor 4. It is fed and spliced with the tip of yarn G here.

The yarn G is discharged from a spinning rotor 14 disposed in a casing (not shown). The yarn discharge device 5, which is discharged via the conduit 41 by the discharge device 5, is arranged in a number of ways in a conventional manner. A discharge roller 50 extending over the spinning units and a pressure roller for each spinning unit. It consists of 51.

The yarn G is fed via a discharge device 5 to a winding device 6 and is divided into a number of spinning units in a conventional manner. A spool roller 60 extending across the entire area and an opposing abutment roller 6 for each spinning unit. 1. The roller 61 is rotatably held between two swing arms. It is. In order to change the running path of the yarn G, the winding device 6 includes a yarn direction changing guide member 63. It is provided.

Similar to the feeding device 2, the spinning rotor 4, the discharging device 5, and the winding device 6 each have a set. sensors 42.52.64 are arranged. The sensor 42 is located on the spinning rotor itself. or its shaft 43 or its driving means (for example, a rotor, not shown). (washer that keeps the rotation speed ratio constant) is scanned. Sensors 52,64 are connected to a large number of The discharge roller 50 and winding roller 6o extending over the spinning unit are scanned. Se Both sensors, like sensor 23, can be located at suitable locations, e.g. consisting of a number of spinning units. It is arranged at the drive end of the spinning machine.

The sensor 23.42.52.64 is connected to the control device by the conductor 24.44.52.65. 7 is connected. This can occur due to various events, e.g. an empty sleeve and a full spool. Controls the exchange with the yarn, stopping the spinning process, or splicing the yarn after yarn breakage.

This control device 7 is connected to an input device 7o by a conductor 74, and this device 70 are also referred to as adjusting devices 71, 72, and 73, which will be explained in detail later.

In the open-end spinning machine described above, the conventional sensors 23.42.52.64 Four different rotational speeds are detected. In other words, the rotation speed of the supply roller 2o ( sensor 23), rotation speed of the spinning rotor 4 (sensor 42), rotation speed of the discharge roller 50 (sensor 52) and the number of rotations of the winding roller 6o (sensor 64).

Furthermore, the thickness of the introduced sliver B is confirmed by the thickness measurement sensor 25.

Sensor 25 is connected to control device 7 by a conductor 26 .

via the keyboard or by rotary adjustment knobs (adjusters 71 to 74). and manually enter various constants that affect the amount of winding. For this constant, e.g. For example, there are material constants that affect the thickness of the thread. This material constant is processed This is due to the diversity of materials used, such as the elasticity and thickness of cotton and synthetic resins. What is it?

In connection with the detection of signals coming in via sensor 23.25.42.52.64, this This is sent for further processing.

There are three basic processing levels associated with thread length verification. In the No. 1 Rubel, The signal detector SE2 (FIG. 1) detects the number of slivers B to be fed (sensor 25), The rotation speed of the supply roller 20 (sensor 23), the rotation speed of the discharge roller 5o (sensor 52) ) is detected.

The thickness of the thread is determined by the number of slivers B and the rotational speed of the supply roller versus the rotational speed of the discharge roller. It can be recognized as the product P of the quotient.

The properties of various materials that influence yarn thickness (especially fiber thickness) can be determined using known material parameters. This is also considered as the inherent magnitude of the signal when forming the signal for thread thickness. considered.

This material parameter can be entered manually via the keyboard or by adjusting the input device 70. The device 71 inputs each spinning unit into a separate memory, and input device 7o are selectively placed. This is provided with, for example, a numeric keyboard, which allows The desired spinning unit is adjusted.

The starting point for checking the winding tension, which is the standard for the winding hardness of the spool 61, is the discharge roller 5. 0 rotation speed (sensor 52) and the rotation speed of the winding roller 60 (sensor 64). . The signal given through the signal detection device SEL is the processed rotation of the winding roller 60. The rotational speed is calculated as the quotient Q1 of the rotational speed of the discharge roller 50. of the signal for this quotient The inherent magnitude forms the winding tension.

The starting point for checking yarn winding is the rotation speed of the spinning rotor 4 (sensor 42) and and the rotation speed (sensor 52) of the discharge roller 50 in the signal detection device SE3 (Fig. 1). The rotational speed of the spinning rotor 4 is determined relative to the rotational speed of the discharge roller 50. The calculation device Q2 that calculates the quotient ascertains the specific magnitude SK3 of the signal representing the winding of the thread. I approve.

In the initial operation of the oven-end spinning machine, the yarn thickness SK2, winding tension SKI and yarn The signal-specific quantities for twist SK3 are ascertained. Influence factors on these signals Corresponding correction values are determined in order to further reduce the data. This supplement A positive value indicates that the yarn thickness, winding tension, and yarn twist, which are later confirmed at any point in time, are constant. Contrasted with each number based on initial operating conditions for spool diameter. This deviation value is actually used as a correction factor for yarn length. This is done on the basis of confirmation of the above spool diameter. The winding tension obtained by the reference method The correction values for tension KFI, thread thickness KF2, thread twist, and KF3 are based on thread length 5K-G. Combined for confirmation of L.

The length of the formed yarn is ensured, taking into account possible spinning interruptions of each spinning unit. recognized.

The signal-specific quantities related to the length of the thread are examined for the formation of a correction factor. thread By forming a correction factor for the length KF-GL, this can be done later Considered when confirming pool diameter.

The spool diameter, which can be corrected in this way, allows for time-accurate spool change adjustment. Signal-specific quantities 5K-5D for adjustment S or adjustment S of the thread receiving device 66 (FIG. 2) is used on the spool circumference, and the spool setting value for spool replacement is 73 and is inputted via the adjustment device 73.

The yarn receiving device 66 is shown in broken lines in FIG. It is designed as a suction device which is arranged on a transverse maintenance device. suction nozzle From the rest position away from the spool 61, the opening is on the spool 61 circumference. The spool can be swiveled to an operating position that maintains a predetermined distance from the spool. By rotating the thread 61 in the opposite direction, the end of the thread present there is suctioned. This interval is If it is too large, the suction force acting on the spool circumference will be too weak to receive the thread G. If the gap is too small, the suction nozzle opening may be too small on the spool 61. There is a risk that this part or the wound thread G may be damaged. be. The suction nozzle of the yarn receiving device 66 is connected to a drive device 68 via a connecting device 67. This allows the nozzle to move to a predetermined position relative to the spool 61. It is closed. The drive device 68 may be provided with a buffer and a chute (not shown), for example. The buffer is adjusted to the size of the spool by the adjusting device 7 via the conductor 69. It is adjusted accordingly. Note that the other end of the suction nozzle is connected to a reduced pressure air generation source.

The spool is removed from time to time so that it operates at regular intervals due to the location of the thread receiving device 66. Make adjustments to the circumferential surface. Manual keyboard input of correction values (adjustment device, conductor 74 According to a), a correction of the control can be carried out.

The method and apparatus according to the present invention may be modified in various ways within the scope of the present invention. example each part may be replaced by its equivalent or equivalent state or other combination. Ru.

Specifically, the adjustment devices 71, 72, 73 are placed in other spatially different positions, and the input The device 70 may be divided and placed separately, and the input device may be provided using a rotary knob. For example, it is formed for analog value input.

As mentioned above, the present invention is limited to spinning machines that mechanically apply momentum moments. It's not something you can do. Used in all other types of spinning machines that finish sliver B into yarn G. used. For such a spinning machine, for example, the winding is done by a spinning machine, that is, the core is first Examples include spinning machines that form a yarn and wrap surrounding yarn around it. In this case, the encirclement The thickness of the thread, the number of wraps per unit of length of the thread, and the wrapping thread wrapped around the core thread. Naturally, tension should be taken into account.

Corresponding sensors and/or regulating devices must be provided.

The spinning member, for example the spinning rotor 4, has a twist that successively imparts to the formed yarn G. In this case, the twist of the yarn resulting directly from the rotational speed of the spinning member is very weak. spinning row In the case of rotor 4, the number of twists is directly given by the rotor rotation speed.

In the case of a friction spinning member, the range of yarn twist is determined by the amount of twist of the friction spinning member being rotated. It is the ratio between the diameter and the thread that should be considered. In such a case, the spinning member rotation speed and When calculating the quotient or proportion resulting from the discharge rate, the diameter ratio device described above is used. The yarn twisting nozzle 92 is connected downstream of the slit 91 of the yarn twisting nozzle 92 . inject The tanning nozzle 90 and the twisting nozzle 92 have compressed air supply openings 900 and 920, respectively. These are annular guide grooves provided to surround the nozzles 90 and 92, respectively. 901.921 and the axial slot 902.922 of each nozzle 90.92. It opens in the tangential direction.

Conduits 903 and 923 connected to separate annular conduits 901 and 921 are common conduits. 93, which is connected to a source of pressurized air. A pressure gauge 95 is installed in the conduit 93. is provided, which is connected to the regulating device 7 via a conductor 96.

This adjusting device 7 is further connected via conductors 84, 86 to the inlet and outlet of the combing device 8. It is connected to a sensor 85.83 at the outlet. Furthermore, conductor 26.53.65 The sensor 25.52.64 is connected to the The sliver B1 discharge roller 50° and the winding roller 60 are scanned by these. .

Furthermore, the adjustment device 7 is connected to the input via conductors 74. The adjustment device 71 (conductor 74b) is connected to the force device 70 and controls the preparation of the material to be processed. Adjustment device 72 (conductor 74a) is a correction factor for yarn receiving device 66 (FIG. 2). The adjustment device 73 (conductor 74) adjusts the desired setting value for the full spool 61. , the adjusting device 76 (conducting wire 74c) is connected to the injector nozzle 90 and the twisting nozzle. must be taken into consideration. In other words, the twist of the thread per unit of thread length When twisting the forming yarn around the spinning member in order to In this case, the twisting rate must be considered.

As mentioned above, the method of the present invention can also be applied to a spinning machine in which yarn twisting is effected aerodynamically. may be applied. A spinning machine of this type is shown in FIG. In this case, as device 8 , a combing device comprising a pair of rollers 80.81.82 functions to feed the sliver. B is loosened and fed to the spinning member 9 to form a yarn.

In the illustrated embodiment, the spinning member 9 has a first nozzle, an injector nozzle 90, 9 Adjustment of the correction value to take into account the geometric form of the spinning member 9 consisting of two conduct.

The pressure gauge 92 is located in the conduit 93 and thus in the pressure air opening 900,920 opening into the spinning sphere. Measure the pressure of pressurized air in the air. In this embodiment, this spinning sphere is Both axial slots 902 and 922 of the ejector nozzle 90 and the twisting nozzle 92 formed by. The pressure gauge 95 therefore detects the air pressure present in the spinning member 9 and A corresponding signal is output to the regulating device 7. This is a signal generator ( pressure gauge), can be placed directly in the conduit 93 or in the compressed air source 94.

To check the actual spool diameter, the adjusting device 7 is equipped with a sensor 25.85.83. ．． In addition to the signal originating from 52.64, a signal from pressure gauge 95 is also transmitted and adjusted. It is compared with the numerical value stored in the adjustment device 7 as a reference value. Pressure gauge 95? If the signal generated by the spool deviates from the set value, check the spool diameter. A corresponding correction factor for adjusting the value is formed.

From the signals generated by sensors 85.83, the delay of sliver B is confirmed. This can then be corrected by the signal generated at sensor 52.

When only this reference value for adjustment is shown on the adjustment device 73 in the input device 70, everything in the input device 70 is adjusted by an additional adjustment device, and from this The input device 70 or a part thereof can be an integral part of the adjustment device 7.

Whether the spinning member 9 is the whole or the injector nozzle 90 or the twisting nozzle 92 is , dimensions and/or arrangement of compressed air supply openings 900 and/or 920; Or when exchanged in terms of direction, naturally the compressed air for the thread G The action changes, and the twisting state also changes.

This point must also be taken into account for the production of spool dimensions. This increases the thickness of the thread. This is because the cross-sectional area of the thread changes accordingly.

Therefore, we conducted experiments to confirm these effects on the spinning member in question, and to determine the correction factor. It is understood in the form of a factor. This is stored in the regulating device 7 and its The post-adjustment device 76 reads it out or enters it in a table and enters it when necessary. It can be input to the force device 80 (adjustment device 76).

In the case of conical spools, a specific conical generatrix is used as a reference value. As a general rule Any conical generatrix can be used for the lever, but the spool 6 driven on the outer circumference 1, the selection of the diameter of the extension part in which the drive takes place serves this purpose.

The rollers that feed the fiber material or the rollers that drive it wear out, so There is no difference over time between the preferred setting of the spool diameter and the actual spool diameter. Ru. In order to maintain this deviation value within an acceptable range, is checked from time to time at predetermined time intervals to determine how much . In some cases, an adjusting device in the input device 70 (not shown) may adjust the correction filter. factor is entered.

In principle, any spool diameter can be used to determine the set value, but variations should be compared. Therefore, if a relatively long yarn length is selected, the The spool size to be set is determined by referring to the full spool 61. preferable.

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Claims (1)

[Claims] 1. A sliver of known thickness is fed at a constant speed, and is spun into yarn. This yarn is discharged at a discharge speed that is maintained at a constant ratio to the fiber feed speed, On the other hand, a spinning machine, in which this yarn is wound onto a spool at a constant winding speed A method for checking the diameter of this spool in units, Under specified conditions (thread thickness, winding tension), it corresponds to a constant spool diameter. The length of the thread has been confirmed empirically, Taking into account possible spinning operation interruptions in this spinning unit, the length of the formed yarn is measured, The winding tension is confirmed from the quotient of the winding speed to the discharge speed, The confirmed thread thickness and confirmed winding tension are then determined for a given spool diameter. The yarn thickness and winding tension are compared with the yarn length based on the empirically confirmed yarn length. The deviation that occurs here will be used to compensate for the thread length when checking the actual spool diameter. A method characterized in that it is used as a positive factor. 2. A method according to claim 1, characterized in that in the case of a conical spool, a constant conical normal is applied. A method characterized in that the associated spool diameter is used as a reference value. 3. A method according to claim 1 or 2, characterized in that the method comprises: re-examine the actual thread length relative to the thread diameter and ensure that this actual thread length is If the length of the thread deviates from the expected theoretical length of the thread being considered, is characterized in that this correction factor is notified. 4. 4. A method according to any one of claims 1 to 3, characterized in that the sprue is completely wound. characterized in that the desired diameter of the spool is selected as a constant spool diameter. Method. 5. The method according to any one of claims 1 to 4, wherein the ejection speed of the spinning member rotational speed is From the quotient, the number of twists per unit of yarn length is ascertained, and from its given reference value deviation is taken into account as a correction factor when checking the actual spool diameter. A method characterized by: 6. 6. A method according to claim 5, characterized in that the spinning member is rotated from around the spinning member to the rotating spinning member. In order to confirm the twist per unit length of the thread during the transmission of rotation to the forming thread, A method characterized in that the rate of rotational conduction between the spinning member and the yarn is determined. 7. A method according to claims 1 to 4, in which the twist of the yarn is formed pneumatically. The air pressure acting in the spinning member, which affects the twist of the yarn, is measured and Note that the deviation from the target value is taken into account when confirming the actual spool diameter. How to make it a sign. 8. 6. A method according to claim 5, characterized in that the spinning element is replaced with a spinning element of matching geometry. In some cases, deviations from the predetermined geometry of the spinning member may cause the actual spool diameter to A method characterized in that it is taken into account when confirming. 9. 9. A method according to any one of claims 1 to 8, characterized in that the fiber influencing the spool diameter is Textile material properties serve as a correction factor to determine the actual spool diameter. A method characterized by being considered. 10. A method according to claims 1 to 9, characterized in that the method is confirmed by taking into account the correction factor. Upon reaching the predetermined spool diameter, the signal for starting the spool change is released. A method characterized by: 11. A method according to any one of claims 1 to 10, for preventing yarn breakage. , the confirmed spool diameter is sent to the thread receiving device as a signal-specific quantity for setting value confirmation. This thread receiving device is supplied with a drive and keeps a constant distance from the circumference of the spool during thread formation. A method characterized by being forced to move so as to place it. 12. 12. The method according to claim 11, wherein in each spinning unit, The play introduced in the spacing of the yarn receiving device may be taken into account as a correction factor. A method characterized by: 13. 13. The method according to claim 11 or 12, wherein in each spinning unit, a spun The play introduced in the spacing of the thread receiving device with respect to the circumferential surface of the thread should be re-checked at a given time. and reported as a corresponding correction factor when replacing this spool. A method characterized by: 14. One spinning element each, adjustable sliver feeding device, adjustable ejection In a spinning machine spinning unit comprising a device and an adjustable winding device, the method according to claim 1 A device for checking the spool diameter for carrying out any of the methods described in 13. A sliver supply device (2, 8), a discharge device (5) and a winding device (6) , a rotation speed receiving device (23, 85, 83, 52, 64) are provided and these allow the input of the length of thread corresponding to a fixed spool diameter. The sliver supply device (2, 8), the discharge device (5) and the confirmed rotational speed of the winding device (6) are calculated and based on this Device characterized in that it can be corrected in the form of a correction factor. 15. Apparatus according to claim 14, characterized in that the spinning members (4, 3) or their drives A measuring member (42) for measuring the rotational speed is arranged on the material, and this forms a correction factor. A device characterized in that it is connected to a control device (7) comprising: 16. A spinning member (9) discharges the formed yarn (G) in the axial direction and at least comprising compressed air outlet openings (900, 920) opening into one spinning sphere; A compressed air conduit (93) terminating in this opening, a compressed air generator for generating compressed air source (94) and a signal generator (95) for maintaining the compressed air pressure constant. This signal generator is connected to a control device (7) to generate a correction factor. A device characterized in that it is connected. 17. 17. Apparatus according to any one of claims 14 to 16, wherein the control device (7) A device characterized in that it is connected to a pool exchange device. 18. 18. A device according to any of claims 14 to 17, wherein the control device (7) It is controllably connected to the drive device (68) of the receiving device (66), so that the receiving device (66) The connecting device is positioned at a certain distance from the circumferential surface of the spool (61) during thread formation. A device characterized in that it can be brought about. 19. 19. Apparatus according to any one of claims 14 to 18, wherein the correction factor is manually applied. An input device (70) for inputting data is assigned to the control device (7). A device featuring: 20. 20. The device according to claim 19, wherein the input device (70) comprises a plurality of input device units. The fiber material properties that influence the spool diameter are divided into each spinning unit in bringing the input and yarn receiving device (66) to the spool (61). A device characterized in that an input of play brought about is performed. 21. The apparatus according to any one of claims 14 to 20, wherein the control is performed for each spinning unit. The control device (7) has its own memory, and these are respectively connected to the input device (70). A device characterized in that it is selectively arranged.